Function empty

tutorials/common/imgui/imgui.h:1784–1784

    inline void         clear_destruct()                    { for (int n = 0; n < Size; n++) Data[n].~T(); clear(); }           // Important: never called automatically! always explicit.

    inline bool         empty() const                       { return Size == 0; }
    inline int          size() const                        { return Size; }
    inline int          size_in_bytes() const               { return Size * (int)sizeof(T); }
    inline int          max_size() const                    { return 0x7FFFFFFF / (int)sizeof(T); }